High-tension circuit-breaker.



I'. B. GOREY.

HIGH TENSION CIRCUIT BREAKBR.

APPLICATION FILED FEB. 19, 1903.

INVENTCJ FredOr-q. b M f LA ma@ FRED B. coREY, or

No. aceros,

\ T@ STAWENT onirica.

SGHENEGTADY, NEWAYO-K, ASSIGNOR T0 GENERAL ELECTRIC COMPANY, A CORPORATION OF-NEW YORK.

y HI-H-TNSION CIRGUIT-BREKR.

Specication of Letterslatentt.

Patentedbct. 13, 190s.

Application inea February 19, ieee. sans remains.

To all 'whom it may concern.'

Be it known that I, FRED B. Conair, a citizen of the United States, residing atSchenectady, county of Schenectady, State ol New York, have invented certain Anew and useful Improvements in High Tension Circuit- Breakcrs, of which the following is a specilication.

The present inventiony relates to. electric circuit breakers, and more especially to elec` tric switches designedA for use in connection with high tension circuits.

As high tension switches have been 4constructed heretofore they have been provided with arc-disrupting' means comprising either an oil reservoir in which the terminal contacts'v are immersed or a large magnet coil whereby magnetic lines of force are generated to act upon the are and break it before the metal contacts become injured. by the arc. Because of these arcsrlisru ting,r adjuncts, high tension switchesflinve een relano mena.

tively expensive to manufacture 'and the great space occupied by them has', moreover, been found in practice to be seriously objectionable.

The object oi" iny invention is to rovide van .electric circuit breaker which s iall be which forms between the severed ends oftheconductor, and. raieiied upon the opposite side to thereby create an expulsive ell'ect upon the arc accordmpr to wel known phe- My invention will be more readily understood by reference to the accompanying drawing forming a part of this speciiication, in which Figure 1 is an elevation, with parts broken away, of aliigli tension switch einbodying one form of my invention, and Fig.

.2 is a vertical cross section ol' the same.

The current conduetingvand interrupting; parts oi' the switch consist of a binding post A having a vertical shank l carrying,` at its upper end'the stationary contact 2, a bindinv post B havingl ahorizontal shank 3 provi( ed at its end with e. stub shaft 4 upon which the movable member C of the switch is journaled, and the movable member C consistin `of a metallic blade 5 provided at its midd e with a hub having a bearing for the reception of the stub shaft 4 and adapted to contact at its upper end with the stationary contact 2, and earryin f at its lower end an insulating handle 7. llfhe bindinr posts A and B are. mounted. in the same horizontal plane upon a sheet E of tou h 4fibrous insulation, and held in position t ereon by screws 8 extending through the sheet and engaging tapped holes in the Shanks l and 3'. A second insulating sheet D isplaced in front of the conductin parts A, B and C, and a third smaller sheet i' isplaeed back of sheet. E to protect the heads of the screws 8.-

The sheets D and E are substantially rectangular with their lower vhalves made slightly narrower than the upper halves, but of a sulieicnt width to project beyond the metallicl conducting parts A and B. Blocks `of insulation l) of L-sliape are located between and secured by rivets lt) to the sheets l) and E at their points of contraction to act as separators of the sheets and to protect the conducting parts `A and C from metallic parts 1 1 which connect plates G and H of the magnetir-field localizing means.

The plates G and H areof magnetic material and foi-economy of manufacture are preferably made of cast iron with faeingsl2 of soft. sheet steel to increase their permeability. The back plate G is substantially rectangular and has formed integral therewith at points on its opposite sides below its middle line posts 1I to which the plate ll is connected by screws 13, and projecting outwardly in the plane ofthe plate G and inline with the 'posts l1 are ears 14 by means of .which the switch may be secured iii place,

being provided in its front lace'witha recess for the reception of the insulating sheet l1'. The front plate ll is of substantially the saine contour as the back plate (l above the lim` of the posts ll, and below said line it s contracted somewhat both in width and length as indicated. by the dotted line h in order to insure ample ci'eepage surface.

The insulating sheets D and E and the f parts carried thereby are secured to tlieiield plates and ll by means ol' screws l5 pass- Aio qing through theme-per corners of the Sheets and pebesenii spacing' ioclz,"

16 .keet-ed oetween the sheets ind E.

' in che consuructii'in above described. it is *no be noted Limit the space between the upper porLion of the -insoeiving Sheets i) and E is substantinly open en eli sides end rhein the lnetzillic connections 1i, end 15 between thciieid pinten G end E., byvmenns o? which magnetic Eines of :Torce are siortlercuihed from one plete to, the other are eli ioeeed onine outside of the paie or the cui'rent es it passes from one binding; poe through t y switch blade to 'die oiher pest. In come" quence o5 this arrangement it' 1s epperent 4that the iuegnetie ied of Jee eurren Lhrough the swi-cfi wi ee dense ai the inner side oi the bent or ieepc'd ypete and moeicnly short-circuied on the outside tnereof, so that when en ere #forms between the ste.- tionery Contact and the switch blade 5, che unbalanced `inegeeiiic eds on the opposite sides thereof, in Whatever position it may be,

nun'ebic eiocrric coni-neto, en insulating sup- .port co which seid contee-ts and ineens for unequehy distributing" ine are connected,

magnetic ed eeeompenying ay current treversing seid contacte consisting of two eonneef/ed nietes of magnetic material disposed upon opposite sides of said contacts and to which seid insuletmg support is connected.

2. The combination with stationery and mevebie contacts, of connected piees of magnetic materiel ioceed on opposite sides o sei-d comincia, and sheets o insulation secured ige the inne surfaces of .said platee and to which 'seid contacts are seceied.

3. The combination of s'mionary and movebie contee-te end their ineteiiic comme tiene arranged to forni e, bend or loop in the eieetrie circuit, i shce of insuletion to '-Niiieii.

conects ere secured, and connecte plaies of" magnetic meterial between which seif sheet 'sind the' parte carried thereby ere seemed.

Ll. The combination of stationery' and movable contacts and their metallic eonnections ernmged to form e bend or loop in the electric circuit, sheets' of insulation beu Yeen which seid. conaots sind connections ere secured, pietes of magnetic material, between .which seid shees are secureend megnetic conductors connecting said plaies et, one er more peints outside said bend or loop.

In witness whereof have hereunto set m5' hand this ilithihiy ci' February, 1903.

FRED B. EUR SY.

'@Viiine. ses

EENJAMIN is. HULL, heLnN @wenn 

